Combined accelerator and brake control



LQOZOOQ May 2, 1933.

E. A. ROCKWELL COMBINED ACCELERATOR AND BRAKE CONTROL Filed April 25,1952 Patente was 2 1,907,00

This invention relates to a combined acnoted that the head of theT-shaped member, celerator and brake control and more parwhich isbeneath the floor board 40, is pivotticularly to a construction in whicha single ally connected at 42 with lever 36 and pivotpedal is so mountedthat it may be selectively ally connected at 44 with lever 28. The armrocked in either direction by the operator 46 of the T-shaped member,which protrudes 55 to apply at will the accelerator or the brake,through an opening 50 of the floor board, or may be used to operate anytwo controls has a substantially square-shaped end to. of a motorvehicle. which is secured, by pin 48, a pedal 51 hav- The presentinvention is an improvement ing a toe portion 52 and a heel portion 54.

.over the dual control pedal described and It will be noted that thelever arm 28, 60 claimed in my application, Serial No. 224,847, T-shapedmember 38 and leverarm 36 form filed October 8, 1927. a three-barlinkage and that in the normal It is an object of the present inventionto position shown in Figure 1, pressure upon so control the support forthe pedal that only the toe 52 of the pedal 51 will tend to dea singleextension protrudes through the press the pivot point 42 whereby lever36 floor board. will rotate in a clockwise direction about It is afurther object to provide an impivot 34, while lever 28 will also rotatein proved mounting for the pedal which is a clockwise direction aboutpivot 18. ()n adapted for support rigidly on the engine the other banditpressure is appliedto the frame beneath the-floor board and which heel54, the pedal 51, thelever arms 36 and 70 may be readily adapted tooperate the throt- 28 will turn in opposite directions.

tle and the braking mechanism or other 0011- The lever arm 36 has a lug56 in thrust en'- trols. gagement with an arm 58 of a bell crank leverIn the drawing: 60, which is supported by pivot pin 62 car- Figure 1 isa side elevation of the improved lied by the fulcrum plate 42 adjacentthe 5 dual control pedal, and pivot pin 34. The pivot pins 34 and 62carry Figure 2 is a view looking downward upon springs 64 and 66. Thespring 64 is po'si the mechanism beneath the floor board, the tionedbetween a washer 68 and the hub or pedal extension being shown insection. lever arm36 while the spring 66 is similarly v In the drawing10 is a portion of the enpositioned between the washer 70 and the gineframe having a boss 12 for the support hub of bell Crank lever 60. Thebel crank of a fixed pin 14. At a point beneath the lever 60 has-a leverarm 72 connected by a pin 14 and somewhat rearwardly of the vetensionspring 74 to a fixed point on the fulhicle is a second boss 16-on theengine frame erum plate 22, whereby the linkage is held serving as asupport for a pin 18 held against in normal released position throughthe lever displacement by a pin 20. The pins 14 and rm 58 t ing & x dpin 7 18 serve as fixed supporting points for a ful- Secured t0 thebottom Side f th flOOl crum plate 22, which is held at its lower end boad is a s pp t 7 8 ca rying a rod 0 which against a shoulder of the pin18 by a nut e y supports a lever 82, the lower por- 24 and is similarlyheld against the shoulder tiOIl of which is i w y bent to be of the pin14 by nut 26. gaged' by the pin 86 carried by the lever armRotatablysupported on the pin 18 between 72 o Which the spring 7 4 issecured. the fulcrum plate 22 and the bos 16 i a It will be evident thatpressure upon the lever arm 28 to which may be secured, by pin toe ofthe pedal will move lever arm 36 and -30, a brake actuating pull rod 32or other will transmit movement to the bell crank control At its upperend the fulcrum plate lever in a direction to extend the spring 22carries a pin' 34 for rotatably mounting a 74 and to transmit movementto the lever lever arm 36. substantially T-shaped arm 82, which in turn,through the pull rod 50 pedal support 38 1s rockably supported by 88,will transmit movement to a throttle or 100 @the lever arms 28 and 36since it will be other control .of the motor Vehicle. Rocking the pedalin the opposite direction by pressing on the heel of the pedal willserve to actuate the brake control.

Various changes and modifications may be resorted to in specific designswithout departing from the spirit of my invention as expressed in theappended claims.

I claim:

1. Combined control mechanism for motor vehicles, comprising a pair offixed pivots, levers carried by each of said fixed pivots, a linkpivotally connecting said levers out of alignment with the fixed pivotsforming a three-bar linkage, said link having an extension therefromforming a pedal support, a rockable pedal carried by said extension,linkage connections moved by one of said levers for operating onecontrol, linkage connections moved by the other of saidlevers foractuating the other control, said pedal being operated to selectivelyactuate either of said controls.

2. Combined control mechanism for motor vehicles comprising a pair ofspaced fixed pivots, levers pivoted respectively to each of said fixedpivots, a link pivotally connecting said levers out of alignment withthe fixed pivots forming a three-bar linkage, whereby the rotation ofone of said levers in an actuating direction rotates the other lever ina direction opposite to its actuating direction of movement, said linkhaving a single pedal supporting extension therefrom, a rockable pedalcarried by said extension for selectively moving either of said leversin an actuating direction, linkage connections operative by movement ofone of said levers for actuating one control and linkage connectionsoperative by movement of the other of said levers for actuating thesecond control.

3. Combined control mechanism for motor vehicles including a floor boardand an engine frame beneath the floor board, a pair of pivots fixed withrespect to the engine frame beneath the floor board, a lever pivotallycarried by one of said pivots for actuating one control, a leverpivotally carried by the other of said pivots for actuating a secondcontrol, a link pivotally connecting said levers out of alignment withthe fixed pivots forming a three-bar linkage togethergwith said levers,said link having a single extension through the floor board and arockable pedal carried by said extension above the floor board wherebypressure upon the toe of said pedal will operate one of said controlsand pressure upon the heel of the pedal will operate the other of saidcontrols.

4. Combined control mechanism for motor vehicles comprising a fixedlvsnnnmted fulcrum plate having a pair of spaced pivots, a lever pivotallysupported by said fulcrum plate at each of said pivots, a link pivotallyconnecting said levers out of alignment with said pivots, a pedalcarried by said link for operating one of said levers upon movement inone direction and for operating the other of said levers upon movementin the opposite direction and separate controls of the vehicle, each ofwhich is actuated by one of said levers.

5. Combined control mechanism for motor vehicles including a floor boardand an engine frame beneath the floor board, a pair of spaced pivotsrigid with respect to the fulcrum plate, a pair of levers, one of saidlevers being carried by each of said pivots, a link pivotally connectingsaid levers, said link having an extension through the floor board, arockable pedal carried by said extension above said floor board andseparate vehicle controls operatively connected with said levers wherebymovement of said pedal in one direction will actuate one of saidcontrols and movement of the pedal in the opposite direction willactuate the other of said controls.

Signed at Chicago, Illinois, this 20th day of April, 1932.-

EDWARD A. ROCKWELL.

